A major source of noise in commercial turbofan engines is the interaction of the fan blade wakes with the fan exit vanes (stators). These wakes can be greatly reduced by filling them with air blown out of the blade trailing edge. Extensive testing of this concept has demonstrated significant noise reductions. These tests were conducted on a low-speed, 4- ft-diameter fan using hollow blades at NASA Glenn Research Center's Aeroacoustic Propulsion Laboratory (AAPL).


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    Titel :

    New Fan Engine Noise-Reduction Concept Using Trailing Edge Blowing of Fan Blades Demonstrated


    Beteiligte:


    Erscheinungsdatum :

    2002-03-01


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



    Trailing Edge Blowing of Fan Blades

    Borgoltz, Aurelien / Craig, M. Elizabeth / Devenport, William | AIAA | 2005



    Low-Speed Fan Noise Reduction with Trailing Edge Blowing

    Sutliff, Daniel / Tweedt, Daniel / Fite, E. Brian et al. | AIAA | 2002


    Trailing-Edge Blowing for Reduction of Turbomachinery Fan Noise

    J. M. Brookfield / I. A. Waitz | AIAA | 2000